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<meta property="og:description" content="作业6 1、According to the von Neumann architecture, List basic parts of a computer. 运算器、控制器、存储器、输入设备、输出设备。
2、A computer has 64 MB (megabytes) of memory. How many bits are needed to address any single byte in memory? 64MB = 2^26 bits, 需要26个比特。
3、List basic parts of a CPU, include cache or not? CPU基本部件：运算器和控制器。 CPU中是有cache的。
4、What mean secondary storage. List some on your PC. secondary storage,指计算机主存储器或内存之外的所有可访问数据存储器，是程序和数据长期保存的地方。如pc上的磁盘，u盘。
5、使用维基百科，解释以下概念： CPU A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions." />
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<meta name="twitter:description" content="作业6 1、According to the von Neumann architecture, List basic parts of a computer. 运算器、控制器、存储器、输入设备、输出设备。
2、A computer has 64 MB (megabytes) of memory. How many bits are needed to address any single byte in memory? 64MB = 2^26 bits, 需要26个比特。
3、List basic parts of a CPU, include cache or not? CPU基本部件：运算器和控制器。 CPU中是有cache的。
4、What mean secondary storage. List some on your PC. secondary storage,指计算机主存储器或内存之外的所有可访问数据存储器，是程序和数据长期保存的地方。如pc上的磁盘，u盘。
5、使用维基百科，解释以下概念： CPU A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions."/>

  
  
  
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    <h1 id="作业6">作业6</h1>
<h2 id="1according-to-the-von-neumann-architecture-list-basic-parts-of-a-computer">1、According to the von Neumann architecture, List basic parts of a computer.</h2>
<p>运算器、控制器、存储器、输入设备、输出设备。</p>
<h2 id="2a-computer-has-64-mb-megabytes-of-memory-how-many-bits-are-needed-to-address-any-single-byte-in-memory">2、A computer has 64 MB (megabytes) of memory. How many bits are needed to address any single byte in memory?</h2>
<p>64MB = 2^26 bits, 需要26个比特。</p>
<h2 id="3list-basic-parts-of-a-cpu-include-cache-or-not">3、List basic parts of a CPU, include cache or not?</h2>
<p>CPU基本部件：运算器和控制器。
CPU中是有cache的。</p>
<h2 id="4what-mean-secondary-storage-list-some-on-your-pc">4、What mean secondary storage. List some on your PC.</h2>
<p>secondary storage,指计算机主存储器或内存之外的所有可访问数据存储器，是程序和数据长期保存的地方。如pc上的磁盘，u盘。</p>
<h2 id="5使用维基百科解释以下概念">5、使用维基百科，解释以下概念：</h2>
<h3 id="cpu">CPU</h3>
<p>A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.</p>
<p>中央处理单元(CPU)是通过执行指令指定的基本算法、逻辑、控制和输入/输出(I/O)操作来执行计算机程序指令的计算机内的电子线路。</p>
<h3 id="ram">RAM</h3>
<p>Random-access memory (RAM /ræm/) is a form of computer data storage that stores data and machine code currently being used. A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory.</p>
<p>随机存取存储器(RAM)是计算机数据存储的一种形式，它存储当前正在使用的数据和机器代码。随机存取存储器设备允许在几乎相同的时间内读取或写入数据项，而不管数据在存储器中的物理位置如何。</p>
<h3 id="rom">ROM</h3>
<p>Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM can only be modified slowly, with difficulty, or not at all, so it is mainly used to store firmware (software that is closely tied to specific hardware, and unlikely to need frequent updates) or application software in plug-in cartridges.</p>
<p>只读存储器(ROM)是一种用于计算机和其他电子设备的非易失性存储器.存储在ROM中的数据只能被缓慢、困难地修改，或者根本不能修改，因此它主要用于存储固件(与特定硬件紧密相连的软件，并且不需要频繁更新)或插件盒中的应用软件。</p>
<h3 id="bus-computing">Bus (computing)</h3>
<p>In computer architecture, a busis is a communication system that transfers data between components inside a computer, or between computers.</p>
<p>在计算机体系结构中，总线是在计算机内部或计算机之间传输数据的通信系统。</p>
<h3 id="parallel-computing">Parallel Computing</h3>
<p>Parallel computing is a type of computation in which many calculations or the execution of processes are carried out simultaneously.</p>
<p>并行计算是一种同时进行多个计算或进程执行的计算。</p>
<h2 id="6写一段文字简单解释云计算cloud-computing">6、写一段文字，简单解释“云计算（cloud computing）”</h2>
<p>对云计算的定义有多种说法。对于到底什么是云计算，至少可以找到100种解释。现阶段广为接受的是美国国家标准与技术研究院（NIST）定义：云计算是一种按使用量付费的模式，这种模式提供可用的、便捷的、按需的网络访问， 进入可配置的计算资源共享池（资源包括网络，服务器，存储，应用软件，服务），这些资源能够被快速提供，只需投入很少的管理工作，或与服务供应商进行很少的交互。</p>
<h2 id="7小孙买了计算机主板说明书表明支持双通道ddr3-1333内存最大支持16g">7、小孙买了计算机主板，说明书表明“支持双通道DDR3-1333内存，最大支持16G”</h2>
<h3 id="1ddr3内存3和1333的含义是什么">1）DDR3内存，“3”和“1333”的含义是什么？</h3>
<p>“3”是内存的第三代，“1333”内存频率。</p>
<h3 id="2小孙买8g-ddr3-1600的内存能提高性能吗">2）小孙买8G DDR3-1600的内存能提高性能吗？</h3>
<p>不能。</p>
<h3 id="3小孙买4g2-ddr3-1333的内存能提高性能吗">3）小孙买4G*2 DDR3-1333的内存能提高性能吗？</h3>
<p>可以。</p>
<h3 id="416g需要多少位地址">4）16G需要多少位地址？</h3>
<p>16G = 2^34bits， 需要34位地址。</p>
<h3 id="备注维基百科中文ddr3-sdram">备注，维基百科（中文）“DDR3 SDRAM”</h3>
<p>DDR3 SDRAM 是一种具有高带宽(“双数据速率”)接口的同步动态随机存取存储器(SDRAM)，自2007年开始使用。它是DDR和DDR2的高速继承者，也是DDR4同步动态随机存取存储器(SDRAM)芯片的前身，DDR3 SDRAM比直接的DDR2 SDRAM的主要优点是它能够以两倍的速度(其内部存储器阵列的速度8倍)传输数据，从而实现更高的带宽或峰值数据速率。</p>

  
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